The registration address of the strong filter manufacturing plant in the county of zhuangan is located at no. 365 in nan song village, the hot spring park of zhuangang county, in the province of hebei. The registration authority is the market supervision authority of zhuang zhuang, representing zhang junfeng, and its activities include the production and sale of: filtering devices, dust removal equipment, environmental protection equipment; and the sale of hardware and electricity. (projects subject to legal approval before operating with the approval of the relevant department)*